What is a WMU?

Excuse me, could you clarify what exactly WMU stands for in the context you're referring to? Is it an acronym or abbreviation commonly used in the world of cryptocurrency or finance? Without more context, it's a bit difficult to provide a precise definition. However, in general, acronyms can stand for various things in different industries, so knowing the specific area of application would be helpful. Could you please elaborate on the context or provide any additional information to narrow down the meaning of WMU?